Are you battling frustrating electrical gremlins in your GM truck or SUV? Flickering lights, malfunctioning power windows and locks, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing and intermittent issues. This replacement BCM, part number 15095334, is the reliable solution to restore your vehicle’s functionality and your peace of mind.
From the Diagnostic Bay
We had a 2002 Silverado in the shop that was driving the owner crazy. The dome light would stay on, the radio would randomly shut off, and the power door locks worked only when they felt like it. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication errors pointing to a network problem. Instead of chasing wires for hours, we started with the most common culprit: the BCM. Swapping in a known-good, programmed module instantly solved every single issue. These modules are notorious for causing bizarre problems that seem unrelated, making a direct replacement the most efficient repair.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system or keyless entry failing to operate.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Warning lights appearing on the dash for no reason.
- ✔ Intermittent no-start conditions due to security system faults.
- ✔ Diagnostic scan tools unable to communicate with the module.
Why Choose Our Programmed 2002 Sierra BCM?
Getting your truck back to normal shouldn’t be a hassle. That’s why we offer this BCM fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). Simply provide us with your VIN after purchase, and our technicians will flash the module with the latest GM-certified software updates. This ensures complete compatibility and proper function right out of the box, eliminating the need for an expensive trip to the dealership for programming. This is a true plug-and-play solution designed for a straightforward installation.
Installation and Post-Install Notes
Installation is typically straightforward, as the BCM is located under the steering column or in the center dash area on most compatible models. After installing your new module, please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Good news: There is no core charge for this part. You can keep your old module without needing to send it back.
Guaranteed Fitment
This module is a direct replacement for the following part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU. It fits a wide range of 2002-2005 GM vehicles, including the Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Suburban, S10/Blazer, and Astro/Safari vans. Please verify your part number to ensure compatibility.
Frequently Asked Questions
What does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic features, such as power windows, locks, lights, wipers, security system, and interior chimes.
Is this part difficult to install?
For most DIY mechanics, the physical installation is not difficult. The BCM is usually located under the driver’s side dash and is held in by a few bolts or clips. Since we pre-program the unit, you avoid the most complex part of the job.
What information do I need to provide?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). This allows us to program the BCM specifically for your vehicle’s options and features.
Will this fix my ‘Service 4WD’ light?
While a faulty BCM can cause a variety of warning lights, issues with the 4WD system are often related to the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the vehicle scanned for specific trouble codes before ordering.
What if my airbag light comes on after I install it?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag system (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be performed by a repair shop with a high-level diagnostic tool.
Do I have to send my old BCM back?
No. There is no core charge on this module. You can keep or dispose of your old part.